St. Mary, MO Live Doppler Radar
Live radar for St. Mary, Ste. Genevieve County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits St. Mary?
Since 1996, the National Weather Service has logged damaging thunderstorm winds on 62 days in the Ste. Genevieve forecast zone and Ste. Genevieve County — the most common reported hazard around St. Mary, mostly in May and July. Next come excessive heat (54 days) and heavy snow & winter storms (36 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Damaging thunderstorm winds | 62 | Mar 2026 | May 8, 2024 · $50,000 damage |
| Excessive heat | 54 | Jul 2025 | Jul 3, 2003 · 1 death |
| Heavy snow & winter storms | 36 | Feb 2025 | Dec 1, 2006 · $529,000 damage |
| Flash flooding | 15 | Apr 2025 | May 5, 1996 · 2 deaths · $20,000 damage |
| Flooding | 6 | Jun 2013 | Jun 4, 2008 · $3.8 million damage |
| Ice storms & sleet | 6 | Feb 2022 | — |
| Lightning casualties & damage | 5 | Oct 2010 | Oct 12, 2010 · $5,000 damage |
| High winds | 3 | Mar 2001 | — |
Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the Ste. Genevieve forecast zone and Ste. Genevieve County; damage is as reported, not adjusted for inflation.
How much snow does St. Mary get?
A normal year brings about 12 inches of snow to St. Mary, based on NOAA's 1991–2020 climate normals for the Chester weather station 6.8 miles away. The snowiest month is usually January (3.7 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.1 | 0.5 | 2.9 | 3.7 | 3.7 | 1.1 | 0.0 | 0.0 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover St. Mary?
The closest NEXRAD Doppler radar is KLSX (St. Louis, MO), about 70 miles northwest. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.
| Radar | Distance | Lowest beam over St. Mary | View |
|---|---|---|---|
| KLSX St. Louis, MO | 70 mi northwest | 5,600 ft | Good — most storms and steady rain or snow show clearly |
| KPAH Paducah, KY | 85 mi southeast | 7,600 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KVWX Evansville, IN | 124 mi east-northeast | 13,400 ft | Limited — the beam overshoots the lowest part of storms |
Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.
Tornado & hail history near St. Mary
Since 1950, NOAA has recorded 98 tornadoes within 25 miles of St. Mary, 29 of them EF2/F2 or stronger. Most came in April and May. The strongest was an F4 on June 22, 1969, which passed about 20 miles west-southwest of town and caused 4 deaths. The most recent was an EF0 on June 7, 2025, which touched down about 22 miles west-southwest of town.
Hail: 190 reports of 1-inch or larger hail within 25 miles since 1955, 14 of them 2 inches or more; the largest was 4.00-inch hail on March 20, 1976.
Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.
On TALON you get St. Mary's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.
St. Mary radar FAQ
Where is the nearest weather radar to St. Mary, MO?
KLSX (St. Louis, MO), about 70 miles northwest. KPAH (Paducah, KY) is 85 miles away and also covers the area.
Does radar show snow in St. Mary?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over St. Mary the lowest scan from KLSX is about 5,600 ft up.
Is TALON's radar for St. Mary free?
Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.
Should I rely on radar for my safety?
No app replaces official warnings. When the National Weather Service issues a warning for St. Mary, follow it right away — see watch vs. warning.
Radar for nearby towns
- Ste. Genevieve, MO radar 9 mi
- Perryville, MO radar 11 mi
- Farmington, MO radar 27 mi
- Fredericktown, MO radar 29 mi
- Park Hills, MO radar 30 mi
- Desloge, MO radar 31 mi
- Bonne Terre, MO radar 33 mi
- Crystal City, MO radar 34 mi
- Festus, MO radar 35 mi
- Leadwood, MO radar 35 mi